“hand d”

The following 3 entries include the term hand d.

H and D curve

noun

: characteristic curve sense a

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H and D speed

noun

: a number indicating the sensitivity of a photographic emulsion determined by the method of Hurter and Driffield

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H and D system

noun

: a system for determining the speed of photographic materials that is based on the characteristic curve and related to the inertia of the material

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